What was found
FLIGHT 718, PHL-FLO, THE FLIGHT LOST THE GREEN HYD SYS AFTER TAKEOFF & RETURNED TO THE FIELD. EMERGENCY EQUIPMENT RESPONDED AS A PRECAUTION, SINCE STEERING IS AFFECTED BY THE LOSS OF GREEN SYS HYD. THE ACFT HAD TO BE TOWED TO THE GATE. R & R THE NR 2 GREEN EDP DUE TO INTERNAL FAILURE & NR 1 GREEN EDP DUE TO NO OUTPUT & SHEARED SHAFT. SYS FLUSH, APPLICABLE FILTER CHANGES & SYS BLEEDING ALL PERFORMED.